Fret Zealot - the best guitar accessory for helping you master the guitar. It’s an LED accessory that lights up your fretboard finger locations in any color. With a Fret Zealot installed on your guitar, this companion app lets you learn quickly and intuitively without the constant distraction of looking at books, videos, or sheet music to find out where to put your fingers.

The Fret Zealot App connects to your fretboard wirelessly via Bluetooth. You can concentrate on technique and finding your style right from the start as Fret Zealot lights the way.

The app contains a Tuner, Chords, Notes, Scales, Video Lessons, and an expanding set of songs, all of which can be displayed directly on your guitar’s Fretboard.

Visit to learn more and purchase a Fret Zealot today! Fret Zealot fits all full size guitars (scale length 24.75” - 25.5”). Fits both acoustic and electric guitars.

App Features:
• Chord diagrams and arpeggios (over 10,000)
• Notes & Scales (dozens)
• Songs (over 35,000!)
• AI / Listening mode - waits for the correct note/chord before moving on
• Tuner (over 50 different tunings available)
• Left-handed and capo settings
• Video Lessons

Send us your feedback, song requests, feature requests, or questions to

Bass guitar coming in August 2018!

What's New

Version 1.1.8

- Added screen for Partner Apps
- Bug fix for songs in alternate tunings

Ratings and Reviews

4.8 out of 5
54 Ratings
54 Ratings

Incredible potential that has not yet been met

Obligatory disclaimer: I initially left a rather frustrated review of this app below. Due to the developers thoughtful and complete response, I’ve updated this with my current thoughts below.

As a beginner at guitar, I can say one thing about the Fret Zealot as a whole; after playing around with it for a single night, I know it’s going to change my life.

In my previous review, I complained about several aspects of the FZ app that I found to be less than what I was expecting in terms of functionality, intuitiveness, and aesthetic appeal. The developers responded to virtually all of my concerns, which you can read below.

I have faith that what they’ve communicated is true and that the app will be continually updated over the next several months. If that happens, I think that this may end up being the most paradigm-shifting guitar learning tool ever made, especially for all of us visually-oriented learners out there who have struggled to grasp the mysteries of the fretboard for what feels like ages.

I mean it. If you’re serious about learning guitar in 2018, you need to look into this thing. There are rough edges, including some manufacturing issues on the hardware side of things on this initial run, but if properly developed and supported, I can see the FZ ecosystem becoming synonymous with guitar in several years from now.

Keep it up, guys.

Developer Response

Thanks for the feedback! We promise- MANY very big updates are coming in just the next couple weeks. We're a little shocked that you're so disappointed with the controls of the songs. Can you send us an email to so we can discuss this further and get more details?

Thousands of songs really are coming. The "transcoder" that we developed to convert MIDI files to display on Fret Zealot took thousands of hours and is an iterative process. We're doing final tuning now, so songs will start be added at an increased pace. We're also actively talking to a dozen different app partners to integrate their content into our app. Please understand that we couldn't have these partnerships set up prior to launch, but it will happen soon.

For chords- there are millions of possibilities and we're working on that now. It's a major logistics challenge implementing so many chords without having you download gigabytes of data. This also, however, is very close to completion and coming soon!

Stand by! Literally everything you mentioned (except the Song screen interface- we want to talk more about that) is being updated and deployed. We're a small team, so we have to deploy things one at a time, but it's all coming!


So close

I love the concept but there are a few problems.

They must and I repeat must better fit the fretboard better. This is a real problem...I had to raise the action to get it to play right. Because it doesn’t fit right...and the strips being made of rubber bending the strings as you go up the fretboard makes a difference in playability. The connection from the fretboard to the unit is a crucial connection and it is way to connection severed when it got caught on a mic was a day old! They charged me $53 to replace the led strip!

The app is too basic. I like the scales but the songs? Seriously? Every track has 5 or 6 guitar parts and they don’t all play at once. Not only that but if you are trying to learn a song you have to cycle through all the parts and try to figure out how they fit together to try to make a single track from end to end.

Did you guys look at successful tab apps (tab pro) before making yours?

I understand the complexity involved (I made the same thing for my keyboard...but you probably went with a binary protocol making conversions from midi or tabs a freakin nightmare.

Cmon guys get it together. You spent a lot of time on the hardware charging us $200 to recoup costs...but you have compromised the usability by cutting corners!

You can still recover, but if you want to cater to serious players you need to make a pro level product.

Developer Response

Hi RSH- thank you for the feedback! We'd actually love to talk to you directly if you email (or we'll try and email you) so we can continue to fine tune Fret Zealot (both hardware and app).

Regarding when you caught your unit on a stand and broke it- we have questions. We purposely made the audio cable able to disconnect at either end for exactly that reason, so we're surprised the cable broke instead of the cable just releasing.

For songs, we spent 1000s of hours on a transcoder and it's getting better every month. We don't source from tabs (they don't have timing data), so we're coming from MIDI. It is not a simple binary protocol by any means.

Yes- we know tab pro. We're trying to talk to them to have them incorporate our SDK rather than us trying to reiterate all the hard work they've done. It's a great help if you email them and say you want them to support us! Our SDK would let you use Fret Zealot right from their existing app :-). We already have a few other partners lined up for this, including GuitarPro files. That's next on our development plan!

Hopefully we'll be in touch to discuss these items further!


Game changer for learning guitar

I've been playing guitar for a few years and learning scales has been most annoying because of having to constantly look away from the neck to learn the shapes and notes. The same is true for learning tabs for songs, solos, etc... The Fret Zealot allows you to focus on the neck at all times and makes it easy to ensure you are always hitting the right notes. It's an amazing technology that will definitely help new players and skilled players alike. In addition, the LED lights look really cool 😎. It has definitely helped my playing and speed in jamming to different keys. I highly recommend.

Developer Response

Thanks so much for the kind words! We're hard at work on more features and content as well, so look forward to lots more to come!


Edge Tech Labs, LLC
198.2 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Simplified Chinese
Age Rating
Rated 4+
© 2017 Edge Tech Labs, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like